3-watt buck regulator has integrated inductor

Bridgewater, NJ—Enpirion touts a breakthrough in power density with its 1-amp 3-watt DC/DC buck regulator IC, the EN5312Q1, reportedly the first of its kind to integrate an inductor to simplify design and cut footprint, parts count, and noise. Delivering down to 0.6 volt from a 2.4-5.5 volt input, the 5-by-4-by-1.1 mm device, in a QFN package, is suited for powering FPGAs, ASICs, DSPs, and microprocessors. Just two low-cost ceramic
(external) capacitors are required.

The EN5312QI incorporates voltage-mode control with very high switching frequency (up to 5 MHz) to provide a wide bandwidth control loop for high transient performance with high noise immunity. Output ripple is just 5 mV p-p. Output voltage is programmed via a 3-pin VID, allowing designers to choose one of seven pre-programmed output voltages, or an external resistor divider can be used.

Click here for the product datasheet. The EN5312QI synchronous buck DC/DC regulator is priced at $1.41 each in 1k quantities.